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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings.sound;
     18 
     19 import static android.bluetooth.IBluetoothHearingAid.HI_SYNC_ID_INVALID;
     20 import static android.media.AudioManager.STREAM_VOICE_CALL;
     21 import static android.media.AudioSystem.DEVICE_OUT_USB_HEADSET;
     22 
     23 import com.android.settingslib.Utils;
     24 
     25 import android.bluetooth.BluetoothDevice;
     26 import android.content.Context;
     27 import android.support.v7.preference.Preference;
     28 
     29 import com.android.settings.R;
     30 import com.android.settingslib.bluetooth.HeadsetProfile;
     31 import com.android.settingslib.bluetooth.HearingAidProfile;
     32 
     33 /**
     34  * This class allows switching between HFP-connected & HAP-connected BT devices
     35  * while in on-call state.
     36  */
     37 public class HandsFreeProfileOutputPreferenceController extends
     38         AudioSwitchPreferenceController {
     39 
     40     public HandsFreeProfileOutputPreferenceController(Context context, String key) {
     41         super(context, key);
     42     }
     43 
     44     @Override
     45     public void updateState(Preference preference) {
     46         if (preference == null) {
     47             // In case UI is not ready.
     48             return;
     49         }
     50 
     51         if (!Utils.isAudioModeOngoingCall(mContext)) {
     52             // Without phone call, disable the switch entry.
     53             mPreference.setVisible(false);
     54             preference.setSummary(mContext.getText(R.string.media_output_default_summary));
     55             return;
     56         }
     57 
     58         // Ongoing call status, list all the connected devices support hands free profile.
     59         // Select current active device.
     60         // Disable switch entry if there is no connected device.
     61         mConnectedDevices.clear();
     62         mConnectedDevices.addAll(getConnectedHfpDevices());
     63         mConnectedDevices.addAll(getConnectedHearingAidDevices());
     64 
     65         final int numDevices = mConnectedDevices.size();
     66         if (numDevices == 0) {
     67             // No connected devices, disable switch entry.
     68             mPreference.setVisible(false);
     69             final CharSequence summary = mContext.getText(R.string.media_output_default_summary);
     70             final CharSequence[] defaultMediaOutput = new CharSequence[]{summary};
     71             mSelectedIndex = getDefaultDeviceIndex();
     72             preference.setSummary(summary);
     73             setPreference(defaultMediaOutput, defaultMediaOutput, preference);
     74             return;
     75         }
     76 
     77         mPreference.setVisible(true);
     78         CharSequence[] mediaOutputs = new CharSequence[numDevices + 1];
     79         CharSequence[] mediaValues = new CharSequence[numDevices + 1];
     80 
     81         // Setup devices entries, select active connected device
     82         setupPreferenceEntries(mediaOutputs, mediaValues, findActiveDevice(STREAM_VOICE_CALL));
     83 
     84         if (isStreamFromOutputDevice(STREAM_VOICE_CALL, DEVICE_OUT_USB_HEADSET)) {
     85             // If wired headset is plugged in and active, select to default device.
     86             mSelectedIndex = getDefaultDeviceIndex();
     87         }
     88 
     89         // Display connected devices, default device and show the active device
     90         setPreference(mediaOutputs, mediaValues, preference);
     91     }
     92 
     93     @Override
     94     public void setActiveBluetoothDevice(BluetoothDevice device) {
     95         if (!Utils.isAudioModeOngoingCall(mContext)) {
     96             return;
     97         }
     98         final HearingAidProfile hapProfile = mProfileManager.getHearingAidProfile();
     99         final HeadsetProfile hfpProfile = mProfileManager.getHeadsetProfile();
    100         if (hapProfile != null && hfpProfile != null && device == null) {
    101             hfpProfile.setActiveDevice(null);
    102             hapProfile.setActiveDevice(null);
    103             return;
    104         }
    105         if (hapProfile != null && hapProfile.getHiSyncId(device) != HI_SYNC_ID_INVALID) {
    106             hapProfile.setActiveDevice(device);
    107         }
    108         if (hfpProfile != null) {
    109             hfpProfile.setActiveDevice(device);
    110         }
    111     }
    112 }
    113